THE GAIN DISTRIBUTION ACCORDING TO THEORETICAL LEVEL STRUCTURE AND DECAY DYNAMICS OF W⁴⁶⁺

Level structure, oscillator strengths, and transition probabilities are evaluated for 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰, 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁹ 41 (1=0,1,2,3,4), 1s² 2s² 2p⁶ 3s² 3p⁵ 3d¹⁰ 41 (1=0,1,2,3,4), and 1s² 2s² 2p⁶ 3s¹ 3p⁶ 3d^l0 41 (1=0,1,2,3,4) states in W⁴⁶⁺. The calculations are carried out using COWAN code and are compared with other results in the literature. A good agreement is found.

The results are used in the determination of the reduced population for 14 fine structure levels in W⁴⁶⁺ ion over a wide range of electron density (from 10⁺¹⁷ to 10⁺²⁵ cm^-3) and at various electron plasma temperatures.

For those transitions with positive population inversion factor, the gain coefficients are determined and plotted against the electron density.